docs: def close(self):
          """
          Close the HDFS handle (disconnect).
          """
          self.__status.refcount -= 1
          if self.refcount == 0:
              self.fs.close()
              for k, status in list(self._CACHE.items()):  # yes, we want a copy
                  if status.refcount == 0:
                      del self._CACHE[k]